Finding the Fourth Proportional to 543,318.20, 814,977.30 and 431,343.80
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Solution
The fourth proportional to 543,318.20, 814,977.30 and 431,343.80 is: 647,015.70
Step by Step Solution
- Step 1: Write the proportion equation
543,318.20 : 814,977.30 = 431,343.80 : x - Step 2: Convert to fraction form
543,318.20/814,977.30 = 431,343.80/x - Step 3: Cross multiply
543,318.20x = 814,977.30 × 431,343.80 - Step 4: Simplify right side
543,318.20x = 351,535,405,495.74 - Step 5: Solve for x
x = 351,535,405,495.74/543,318.20 - Step 6: Final answer
x = 647,015.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.